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55010142100 = 225217319716141
BaseRepresentation
bin110011001110110111…
…000010011110010100
312020222202021202112101
4303032313002132110
51400130044021400
641134334131444
73655126331014
oct631667023624
9166882252471
1055010142100
1121369877a61
12a7b2950b84
135258a3ca54
14293bcb1c44
15166e65156a
hexccedc2794

55010142100 has 72 divisors (see below), whose sum is σ = 120678947928. Its totient is φ = 21764467200.

The previous prime is 55010142071. The next prime is 55010142101. The reversal of 55010142100 is 124101055.

It can be written as a sum of positive squares in 12 ways, for example, as 20830096 + 54989312004 = 4564^2 + 234498^2 .

It is a super-2 number, since 2×550101421002 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55010142101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3400030 + ... + 3416170.

It is an arithmetic number, because the mean of its divisors is an integer number (1676096499).

Almost surely, 255010142100 is an apocalyptic number.

55010142100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55010142100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60339473964).

55010142100 is an abundant number, since it is smaller than the sum of its proper divisors (65668805828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55010142100 is a wasteful number, since it uses less digits than its factorization.

55010142100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16525 (or 16518 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 55010142100 its reverse (124101055), we get a palindrome (55134243155).

The spelling of 55010142100 in words is "fifty-five billion, ten million, one hundred forty-two thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 173 197 346 394 692 788 865 985 1730 1970 3460 3940 4325 4925 8650 9850 16141 17300 19700 32282 34081 64564 68162 80705 136324 161410 170405 322820 340810 403525 681620 807050 852025 1614100 1704050 2792393 3179777 3408100 5584786 6359554 11169572 12719108 13961965 15898885 27923930 31797770 55847860 63595540 69809825 79494425 139619650 158988850 279239300 317977700 550101421 1100202842 2200405684 2750507105 5501014210 11002028420 13752535525 27505071050 55010142100